How to solve the redis cache avalanche

This article mainly introduces how to solve the redis cache avalanche, the article is very detailed, has a certain reference value, interested friends must read it!

How to solve the redis cache avalanche?

Cache avalanche means that the same expiration time is used when we set the cache, which causes the cache to expire at the same time, and all requests are forwarded to the DB,DB instantaneous overpressure avalanche.

Solution

The avalanche effect of cache failure has a terrible impact on the underlying system. Most system designers consider locking or queuing to ensure cached single-thread (process) writes so as to avoid a large number of concurrent requests falling on the underlying storage system in case of failure.

A simple solution here is to spread the cache expiration time. For example, we can add a random value to the original expiration time, such as 1-5 minutes, so that the repetition rate of each cache expiration time will be reduced. It is difficult to cause collective failure events.

The above is how to solve all the contents of redis cache avalanche, thank you for reading! Hope to share the content to help you, more related knowledge, welcome to follow the industry information channel!